Disk straightening and truing apparatus.



W. GIBBS. DISK STRAIGHTBNING AND TRUING APPARATUS.

APPLICATION FILED JULY 18I 1912.

Patented Apr. 15, 1913.

IVITNESSES:

ATTORNEY.

a machine passar ernten.

GBB, BRANTFDRD, ON'-t, CANADA., ASSIGNOR OF ONE-HALF T "BERCY E. VERITE?, F BRANTFORD, ONTARIO, CANADA.

'DESK STRAIGHTENNG ND TRUING APPARATUS.

Specification or" Letters Patent.

llatented Apr. 115, 1%13.

.application med nay 1s, 1912. serial no. nosas.

all 'zo/tom it may concern Yle it known that l, VILLIAM Giens, a sub- .of the King of Great Britain, and a resident of the city of Brantford, in the county ot llrant, in the Province of Ontario, ftlanada, have invented certain new and useful lmproven'ients in Disk Straightening and 'l`ruing Apparatus, of which the followis specilication.

'this invention relates to apparatus for straightening and truing round plates or disks such as commonly used in seed drills, plows, or as saws, and my t1object is to devise which will so accurately raighten and true a. disk as to eliminate enthe necessity for employing hand ak as is new generally done.

attain my object by means of apparatus 1iich the disks are treated between upper lower plates carrying concentric series otcontact pieces such as balls, the upper series of balls t breaking joint or having a staggered relationship with the lower series as shown. llither the upper or lower or both plates are rotated and at the same time heavy pressure is brought to bear to press the balls against the faces of the disk substantially as hereinafter more particularly described and illustrated in the accompanying drawings.

Figure 1 is a front elevation partly in section of my improved apparatus. Fig. 2 is a plan view of the under side of the head carrying the upper series of adjustable balls.

'l 3 is a detail of a ball adjustment. Fig.

is a detail in plan of a roller used as a substitute for a ball. i

in the drawings, like numerals of reference indicate corresponding parts in the different figures.

14tis the base to which is connected the yoke 2. On the base issupported a plate 1. ln suitable individual bearings in the plate are supported a series of contact pieces 3 preferably rotatable on axes radial of the l te. Flfhese contact pieces will usually be l balls preferably arranged in plan in substantially the same mannerv as the balls shown in Fig. 2. A

fr is movable plate or head concentric with the plate 1, and to which is connected the screw spindle 5, the connection between the spindle and the head being' such that the may revolve freely. The spindle 5 is screwed through the yoke 2 and is provided the purpose.

at its upper end with a hand wheel 6. As a preferred construction the spindle 5 is firmly secured to the plate between which and the head .fr are located the ball bearings 16.

The plate 4 supports in suitable individual bearings a series of balls 7 which are preferably arranged as shown in Fig. 1 in staggered relationship with the lower balls. rl`hese balls are held in place by means of a retainer 8.

On the outer faces of the plates l and l are formed the circular racks 9 with which mesh the pinions 10 faston the spindles 11 journaled in the yoke 2.

The spindles may be slid longitudinally in their bearings to withdraw the pinions 10 from mesh when it is necessary to raise the plate el or lower the plate 1, though any other arrangement might be employed for rlhe disks are straightened by inserting' them between the upper and lower plates.- The upper plate is then forced down by rotating the screw spindle and at the same time one or both plates are rotated by operating the spindles 11 by any suitable means. The disk is thus rolled lbetween the balls.- The pressure of the balls is so distribute-d as to effectively straighten out any kinks or in-' equalities in the disk.l

It. is preferable to supportthe lower plate 1 on ball bearings. I, therefore7 provide ball bearings 17 between thel underside of the plate 1 and a bearing plate 18. This bearing plate is supported by posts 19 which are slidable, carried in holes in the base 14. The posts are provided with slots 20, through which wedges 21 are driven engaging` the vupper side of the base. By driving out these wedges the plate 18 may be allowed to drop away to expose the bearing adjustments for the balls 3.

On reference to Fig. 3 it will be seen that each ball 3 or f? rests on a cupped screw 13 screwed iu one of the plates 1 or d, and that 10G a lock screw 22 is screwed into the same hole. This enables me to separately adjust each ball perpendicular to its plate so that each ball may be given exactly the right bearingv on the disk being operated on.

As a substitute for balls, rollers radially journaledl as shown in Fig. fl, may be substituted with some success, though the balls are preferable as, while it is essential that the contact pieces shall rotate freely on ra- 1l dial axes, the freedom of the balls to rotate on any axis is an added advantage and their use reduces the cost of construction.

It will be understood, of course, that I do not desire to restrict myself to the exact construction shown, as many other arrangements might be provided for pressing the disks between two series of balls, one or both of which may be rotated to roll out any inequalities in the disk.

What I claim as my invention is l. In disk straightening apparatus, the combination of two parallel plates relatively rotatable and axially movable; and contact pieces carried by each of said plates on their adjacent faces rotatable on axes radial of the plates. Y l

2. In disk straightening apparatus, the combination of two parallel plates relatively rotatable and axially movable; and contact pieces carried by said plates on their adja-A centfaces rotatable on axes radial of the plates, the contact pieces of one disk having a staggered relationship with those of the other.

3. In disk straightening apparatus the combination of two parallel plates relatively rotatable and axially movable; and contact pieces carried by each of said plates on their adjacent faces rotatable on axes radial of `the plates, the said contact pieces being arranged in concentric series.

4. In disk straightening apparatus, the combination of two parallel plates relatively rotatable and axially movable; and Contact pieces carried by said plates on their adjacent faces rotatable on axes radial of the plates, the said contact pieces being arranged in concentric series, the series of.

contact pieces of one plate having a staggered relationship to the series of the other plate.

5. In disk straightening apparatus the combination of two parallel plates relatively rotatable and axially movable; and contact lpieces carried by said plates on their adja cent faces rotatable on axes radial of the plates and means for individually adjusting said contact pieces in a direction perpendicular to the surfaces of the plates.

6. In disk straightening apparatus the combination of a plate suitably supported;

a second plate parallel to and concentric with the first; means for moving said second plate to and from the tirst plate, one of the` said plates being rotatable; means for rotating said plate; and contact pieces carried by each of said plates on their adjacent faces rotatable on axes radial.of the plates.

7. In disk straightening apparatus the combination of two parallel plates relatively rotatable and axially movable; and a plurality of balls carried by each of said plates on their adjacent faceseach in an independent bearing.

8. In disk straightenine apparatus the combination of two paralleI plates relatively rotatable and axially movable; a plurality of balls carried by said plates on their adjacent faces, each in an independent bearing, and means for independently adjusting each bearing axially of the plates.

9. In disk straightening apparatus the combination of two parallel )lates relatively rotatable and axially Inova lc; a plurality of balls carried by said plates on their adjacent faces, each in an independent' bearing, and means for indepeinlently adjusting each bearing axially of the plates, the .said balls being arranged in concentric series, the series of one plate having a staggered relationship with the series ot the other plate.

Brantford, Ont., this ttth day of July, 1912.

WLLrin sinus.

Signed in' the presence or- KATHLEES GRADY, S. I). PITCHER. 

